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Children and the elderly may be good at spreading the coronavirus among their age groups, and young adults may be the primary source of community spread, or “super spreading,” according to a new study.The study, published Wednesday, involved the coronavirus testing results of a large contract tracing effort in two states in India. Researchers had results from more than half a million people from Tamil Nadu and Andhra Pradesh regions traced after more than 80,000 primary, or index, positive cases.They found that only 8 percent of index cases accounted for 60 percent of new infections. And that about 70 percent of infected people did not infect any of their contacts."That's a hugely disproportionate effect. Superspreading has been suspected, but not really documented,” study leader Ramanan Laxminarayan of the Center for Disease Dynamics, Economics and Policy in New Delhi, and also of Princeton University, told CNN.“The greatest proportion of test-positive contacts within most age groups were exposed to index cases ages 20-44 years,” researchers found.While that age group resulted in the highest rate of secondary cases, children under 15 also had high rates of secondary spread among their own age group.During the time period researchers looked at, roughly March through August, schools were closed and there were still high rates of coronavirus recorded among children."While the role of children in transmission has been debated, we identify high prevalence of infection among children who were contacts of cases around their own age," the team wrote in their report, published in the journal Science.The data was collected thanks to rigorous surveillance and contact tracing measures.“Procedures include syndromic surveillance and (COVID-19) testing for all individuals seeking care for severe acute respiratory illness or influenza-like illness at healthcare facilities; delineation of 5km “containment zones” surrounding cases for daily house-to-house surveillance to identify individuals with symptoms; and daily follow-up of all contacts of laboratory-confirmed or suspect COVID-19 cases, with the aim of testing these individuals 5-14 days after their contact with a primary case, irrespective of symptoms, to identify onward transmission,” the study lays out. 2292

CHULA VISTA, Calif. (KGTV) -- This week, 10News is exploring the South Bay city of Chula Vista. Monday morning, Kalyna Astrinos was live at Aunt Emma’s Pancakes, one of the oldest breakfast spots in the city. Watch the video above for more. 249

Chip Gaines, co-host of HGTV's popular "Fixer Upper" series, has an aerodynamic new look.Gaines's wife and co-host Joanna shared a picture of the TV star with his head shaved standing among a group of patients at St. Jude Children's Research Hospital's Target House in Memphis, Tennessee on Wednesday. 319

CHULA VISTA, Calif. (KGTV) -- The man accused of fatally stabbing a man during a road-rage dispute in the South Bay is due in court for pre-trial motions Monday. Rickey Smith, 60, is accused of stabbing 36-year-old Horace Williams to death as Williams sat in his van. According to police, the incident happened on November 27, 2018 along Sweetwater Road. Witnesses told police Smith was following Williams’ van as the two yelled at each other. RELATED: Man accused of killing driver in South Bay road rage incident pleads not guiltySmith’s pickup then reportedly hit the van from behind before Smith pulled in front of the van, slamming on the brakes. Witnesses told police the maneuver caused the crash. Police say Smith then got out of his truck and stabbed Williams. Smith, a father of five who had just dropped several of his children off at school, died at the scene. RELATED: Father of five killed in Chula Vista road rage stabbingSmith was arrested and pleaded not guilty at his initial court appearance. 1020

CHULA VISTA, Calif. (KGTV) -- A pedestrian died Friday night following a crash along Main Street in Chula Vista, police say. According to police, the incident happened near the intersection of Main Street and Del Monte Avenue around 9:30 p.m.After arriving on scene, officers found the injured man in the eastbound lane of Main Street. He was taken to the hospital where he later died.At this time, the circumstances of the crash are under investigation, but the department says the driver stayed on scene and cooperated.Alcohol isn’t believed to be a factor in the crash, police say. Anyone with information is asked to call the CVPD Traffic Unit. 656